I'm trying to retrieve 5 words before after a particular word using regex. My code is as follows.
$str= '<li>111-37774 Blue</li><li>111-1566 Red</li><li>122-4555 White</li><li>1455-789 Yellow</li></ul>Minimum order applies. This is a string for testing.<p>';
$regexForPattern ='/((?:\w+\W\s*){0,5})minimum\b((?:\W*\w+){0,5})/i';
preg_match_all ($regexForPattern , trim( preg_replace('#<[^>]+>#', ' ', $str) ), $patternMatches);
print_r($patternMatches);
I want 5 words before and after the word 'minimum' from $str
.
Currently I'm getting the output as:
Array ( [0] =>
Array ( [0] => 4555 White 1455-789 Yellow Minimum order applies. This is a )
[1] => Array ( [0] => 4555 White 1455-789 Yellow )
[2] => Array ( [0] => order applies. This is a )
)
I expect the string 122-4555 White 1455-789 Yellow instead of 4555 White 1455-789 Yellow in the resultant array. For the words like 1455-789 it is considering 1455 as one word and 789 as another. How can I get only exact words?
Can anyone help me to fix this? Thanks in advance.
The \\w
cannot match -
between the digits, hence the regex fails to fetch the expected substring from the expected location.
You should replace (?:\\w+\\W\\s*){0,5}
with (?:\\S+\\s+){0,5}
and (?:\\W*\\w+){0,5}
with (?:\\s+\\S+){0,5}
:
'~((?:\S+\s+){0,5})minimum\b((?:\s+\S+){0,5})~'
See the regex demo .
That way, you will match any 0 to 5 space-separated non-whitespace chunks before and after the keyword.
See the PHP demo :
$str= '<li>111-37774 Blue</li><li>111-1566 Red</li><li>122-4555 White</li><li>1455-789 Yellow</li></ul>Minimum order applies. This is a string for testing.<p>';
$regexForPattern ='/((?:\S+\s+){0,5})minimum\b((?:\s+\S+){0,5})/i';
$nstr = trim( preg_replace('#<[^>]+>#', ' ', $str));
echo $nstr . "\n";
preg_match_all ($regexForPattern , $nstr, $patternMatches);
print_r($patternMatches);
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.